Hydraulic Connection; Electrical Connections - Tuxhorn tubra-PGR-S DN 20 Instructions De Montage Et D'utilisation

4.4

Hydraulic connection

HRL
KRL
4.5

Electrical connections

4.5.1 General description
Only authorised, specialist personnel are permitted to open electrical housings and work on
the electrical system after de-energising the equipment.
When establishing connections, make sure the terminal assignments and polarity are correct.
Protect the electrical components from overvoltage.
Risk of fatal electric shock as a result of incorrect electrical connections.
 Electrical connections must exclusively be created by electricians ap-
Danger!
proved by energy suppliers and as per the locally applicable regulations.
 Disconnect the supply voltage prior to conducting any work.
4.5.2 Circulation pump
Refer to the operating manual of the circulation pump.
Art.-Nr. 966.20.27
Last updated 2022/02/28
HVL
KVL
- 9 -
HVL Heating flow
HRL Heating return
KVL Boiler flow
KRL Boiler return
This is a sample illustration which does not
claim to be exhaustive; it does not replace
specialist planning.
GB